Pavlos is the former Crown Prince of Greece. He is the second child and eldest son of the last king of Greece, Constantine II, and Queen Anne-Marie. His father served as king from 1964 until 1973, when the Greek monarchy was abolished. Pavlos was crown prince and heir apparent to the throne from birth until the monarchy's abolition. He became head of the former Greek royal family following his father's death on 10 January 2023. As a male-line descendant of Christian IX of Denmark he is a Danish prince, although not in succession to its throne. Queens Margrethe II of Denmark and Sofía of Spain are his aunts, and Kings Felipe VI of Spain and Frederik X of Denmark his first cousins.